Not Literally Productions has been creating a series of anthemic music videos for each of the houses at Hogwarts School of Witchcraft and Wizardry, rewriting pop songs for Hufflepuffs and Slytherins. Harry Potter's own Gryffindor House is the latest to get the song-and-dance treatment, to the tune of Katy Perry's "California Girls."

Outfitted in their red and gold for the latest Quidditch match, the Gryffindors really do look like and Abercrombie and Fitch catalogue. The Hufflepuffs seemed much more fun in their Lady Gaga video:

And the Slytherins were, well, glittery and evil while dancing to Ke$ha: